SpaceXAI Launches Grok 4.5, Claims Competitive Edge Over Claude Opus
On July 8, 2026, SpaceXAI released Grok 4.5, a coding model priced competitively at $2 per million input tokens and $6 for outputs. Elon Musk claims it performs comparably to Claude Opus 4.7, though benchmarks suggest it trails behind newer models from Anthropic and OpenAI, according to Decrypt.
SpaceXAI debuted its Grok 4.5 coding model on July 8, 2026, aiming to attract coders and knowledge workers by offering lower costs compared to its competitors. At $2 per million input tokens and $6 per million outputs, Grok 4.5 is priced significantly less than Anthropic's Claude Opus 4.8, which costs $5 for input and $25 for output, as well as OpenAI's GPT 5.6 Sol, priced at $5 input and $30 output.
Elon Musk, in his announcement via X, noted that Grok 4.5 is "roughly comparable to Opus 4.7", Anthropic's previously leading model before the release of Opus 4.8. This positioning focuses on speed and cost efficiency rather than top-tier performance. Musk claims that Grok 4.5's speed makes it a practical choice for users, particularly those at Tesla and SpaceX.
Despite the competitive pricing, benchmark results reveal a disparity in performance. Grok 4.5 has shown a score of 53% in fixing real software bugs, as measured by the DeepSWE 1.1 benchmark. This score is lower than Claude Opus 4.8, which scored 59%, and GPT 5.5, which led with a 67% score. The newer Claude Fable 5 reportedly peaked at 70% in the same tests.
Currently, Grok 4.5 is not available in the European Union, with access expected to roll out in mid-July 2026.
Summary based on original reporting by Jose Antonio Lanz at Decrypt, originally published Jul 8, 2026. SolanaWire does not republish source content.
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